Question

What is collagen?

Answer 1

Collagen is a hard, insoluble, and fibrous protein that makes up one-third of the protein in the human body.
In most collagens, the molecules are packed together to form long, thin fibrils.

These act as supporting structures and anchor cells to each other. They give the skin strength and elasticity.

The collagens in the human body are strong and flexible.

Some types of collagen fibrils, gram-for-gram, are stronger than steel.